//package com.example.common.rc.autoinject;
//
//import com.squareup.javapoet.JavaFile;
//import com.squareup.javapoet.MethodSpec;
//import com.squareup.javapoet.TypeSpec;
//import java.io.IOException;
//import java.util.Collections;
//import java.util.HashSet;
//import java.util.List;
//import java.util.Set;
//import javax.annotation.processing.Completion;
//import javax.annotation.processing.Filer;
//import javax.annotation.processing.Messager;
//import javax.annotation.processing.ProcessingEnvironment;
//import javax.annotation.processing.Processor;
//import javax.annotation.processing.RoundEnvironment;
//import javax.lang.model.SourceVersion;
//import javax.lang.model.element.AnnotationMirror;
//import javax.lang.model.element.Element;
//import javax.lang.model.element.ElementKind;
//import javax.lang.model.element.ExecutableElement;
//import javax.lang.model.element.TypeElement;
//import javax.lang.model.element.VariableElement;
//import javax.lang.model.util.ElementFilter;
//import javax.lang.model.util.Elements;
//import javax.lang.model.util.Types;
//
//public class AutoInjectProcessor implements Processor {
//
//    private ProcessingEnvironment processingEnv;
//
//    private Messager messager;
//
//    private Elements elementUtils;
//
//    private Filer filer;
//
//    private Types typeUtils;
//
//    @Override
//    public Set<String> getSupportedOptions() {
//        return Collections.emptySet();
//    }
//
//    @Override
//    public Set<String> getSupportedAnnotationTypes() {
//        HashSet<String> types = new HashSet<>();
//        types.add("com.example.AutoInject");
//        return types;
//    }
//
//    @Override
//    public SourceVersion getSupportedSourceVersion() {
//        return SourceVersion.latestSupported();
//    }
//
//    @Override
//    public synchronized void init(ProcessingEnvironment processingEnv) {
//        this.messager = processingEnv.getMessager();
//        this.elementUtils = processingEnv.getElementUtils();
//        this.filer = processingEnv.getFiler();
//        this.typeUtils = processingEnv.getTypeUtils();
//        this.processingEnv = processingEnv;
//    }
//
//    @Override
//    public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
//        Set<? extends Element> elements = roundEnv.getElementsAnnotatedWith(AutoInject.class);
//
//        elements.stream()
//            .filter(e -> e.getKind() == ElementKind.CLASS)
//            .map(e -> (TypeElement) e)
//            .forEach(typeElement -> {
//                List<VariableElement> fields = ElementFilter.fieldsIn(typeElement.getEnclosedElements());
//
//                // 构建无参构造方法
//                MethodSpec.Builder constructor = MethodSpec.constructorBuilder();
//
//                // 添加注入逻辑
//                fields.stream()
//                    .filter(f -> f.getAnnotation(AutoInject.class) != null)
//                    .forEach(field -> {
//                        constructor.addStatement("this.$L = $T.class.cast(context.getBean($T.class))",
//                            field.getSimpleName(), field.asType(), field.asType());
//                    });
//
//                // 生成构造方法
//                MethodSpec constructorSpec = constructor.build();
//
//                // 构建类
//                TypeSpec.Builder classBuilder = TypeSpec.classBuilder(typeElement.getQualifiedName().toString());
//                classBuilder.addMethod(constructorSpec);
//
//                // 生成 Java 文件
//                try {
//                    JavaFile.builder("com.example", classBuilder.build()).build().writeTo(processingEnv.getFiler());
//                } catch (IOException e) {
//                    throw new RuntimeException(e);
//                }
//            });
//        return true;
//    }
//
//    @Override
//    public Iterable<? extends Completion> getCompletions(Element element, AnnotationMirror annotation, ExecutableElement member, String userText) {
//        return null;
//    }
//
//}
